The Removal of Nitrate by Nanoscale Iron Particles Produced Using the Sodium Borohydride Method

作者：Cho Hyoung Chan; Park Sung Hoon; Ahn Ho Geun; Chung Minchul; Kim Byungwhan; Kim Sun Jae; Seo Seong Gyu; Jung Sang Chul^*

来源：Journal of Nanoscience and Nanotechnology, 2011, 11(2): 1684-1687.

DOI：10.1166/jnn.2011.3325

• Zero Valent Iron
• NO3-N
• Iron Oxide
• pH
• Specific Surface Area

This study was conducted to investigate removal of nitrate by nanoscale zero-valent iron (ZVI) particles in aqueous solution. ZVI particles was produced from wasted acid that is by-products of a pickling line at a steel work. The reaction activity of ZVI particles was evaluated through decomposition experiments of NO3-N aqueous solution. Addition of a larger amount of ZVI particles resulted in a higher decomposition rate. ZVI particles showed higher decomposition efficiencies than commercially purchased ZVI particles at all pH values. Both ZVIs showed a higher decomposition rate at a lower pH. Virtually no decomposition reaction was observed at pH of 4 or higher for purchased ZVI. The ZVI particles produced directly from wasted acid by the sodium borohydride method were not easy to handle because they were very small (10-200 nm) and were oxidized easily in the air.

• 出版日期2011-2